Originally Posted by Greg76248
I flew LGW-DFW last week and upgraded from J to F using an eVIP and didn't have to pay any tax. Noone even mentioned a tax. I have flown this route several times last year, and no tax then as well. Is it unique to LHR, or is it only for Y to J upgrades, and not J to F upgrades?
My understanding is that this is basically a "luxury" tax for flying in a premium. Presumably you had already paid that, somewhere buried in your purchase taxes, for the J ticket. Then the upgrade to F wouldn't incur a tax. I think.
Cheers.